About call recording in Android 9, please, read here: http://clevermobile.net/products/call-recorder/faq/#android9
Also, please, read about hidden phone numbers: http://clevermobile.net/call-recorder-hidden-phone-number-starting-from-march-8-2019/
And use version here: https://drive.google.com/open?id=1q3vSzC8ZlSz5UDP3Bti-WXK1sV8nxO56